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Substance Name: Selenium, elemental
RN: 7782-49-2
UNII: H6241UJ22B
InChIKey: BUGBHKTXTAQXES-UHFFFAOYSA-N

Note

  • An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.

Molecular Formula

  • Se

Molecular Weight

  • 78.96
 

Classification Codes

Classification Codes

  • Antioxidants
  • Growth Substances
  • Micronutrients
  • Protective Agents
  • Reproductive Effect
  • Trace Elements
  • Tumor Data

Superlist Classification Codes

  • 2007 CERCLA Priority List, Rank: 147
  • 2011 CERCLA Priority List, Rank: 146
  • Reportable Quantity (RQ) = 100 lb
  • TWA 0.2 mg/m3

Names and Synonyms

Name of Substance

  • Selenium
  • Selenium, elemental

MeSH Heading

  • Selenium

Synonyms

  • C.I. 77805
  • Caswell No. 732
  • CCRIS 4250
  • CI 77805
  • Colloidal selenium
  • EC 231-957-4
  • EINECS 231-957-4
  • Elemental selenium
  • EPA Pesticide Chemical Code 072001
  • Gray selenium
  • HSDB 4493
  • Selen
  • Selen [Polish]
  • Selenate
  • Selenium
  • Selenium alloy
  • Selenium base
  • Selenium dust
  • Selenium elemental
  • Selenium homopolymer
  • Selenium metallicum
  • Selenium, colloidal
  • Selenium, metallic
  • UNII-H6241UJ22B
  • Vandex

Systematic Name

  • Selenium

Superlist Names

  • Selenium
  • Selenium and compounds
  • Selenium compounds
  • Selenium powder
  • Selenium powder [UN2658] [Keep away from food]
  • Selenium, elemental
  • UN2658

Registry Numbers

CAS Registry Number

  • 7782-49-2

FDA UNII

  • H6241UJ22B

Other Registry Numbers

  • 11125-23-8
  • 11133-88-3
  • 12640-29-8
  • 12640-30-1
  • 12641-96-2
  • 12733-65-2
  • 37256-19-2
  • 37258-85-8
  • 37276-15-6
  • 37368-02-8
  • 50954-17-1
  • 51882-60-1
  • 95788-45-7

System Generated Number

  • 0007782492

Structure Descriptors

InChI

1S/Se

InChIKey

BUGBHKTXTAQXES-UHFFFAOYSA-N

Smiles

[Se]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LDLo intravenous 2500ug/kg (2.5mg/kg)   Journal of Obstetrics and Gynaecology of the British Empire. Vol. 35, Pg. 693, 1928.
rat LCLo inhalation 33mg/m3/8H (33mg/m3) LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA

LUNGS, THORAX, OR RESPIRATION: CHANGES IN LUNG WEIGHT

BLOOD: HEMORRHAGE		 AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 4, Pg. 458, 1951.
rat LD50 intravenous 6mg/kg (6mg/kg)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 4, Pg. 458, 1951.
rat LD50 oral 6700mg/kg (6700mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Toxicology and Applied Pharmacology. Vol. 20, Pg. 89, 1971.